Results 31 to 40 of about 117,930 (276)

High Geomagnetic Reversal Frequency During the Middle to Late Ediacaran (∼570 Ma) Constrained by Integrated Magneto‐ and Cyclostratigraphy

open access: yesJournal of Geophysical Research: Solid Earth, Volume 131, Issue 4, April 2026.
Abstract The Ediacaran–Cambrian (∼635–539 Ma) geomagnetic field is characterized by unusually high reversal rates and markedly weakened field strength. Estimates of these reversal frequencies can reveal key aspects of deep Earth dynamics and their potential influence on surface environments and early complex life.
J. W. L. Afonso   +12 more
wiley   +1 more source

La colección arqueológica ?Pedro Dade? del Museo de La Plata

open access: yesRevista del Museo de La Plata, 2018
En este trabajo se da a conocer el análisis de una colección de materiales arqueológicos provenientes de la costa norte de la provincia de Santa Cruz (Patagonia argentina) que se encuentra alojada en la División Arqueología del Museo de La Plata, Argentina.
Zilio, Leandro   +2 more
openaire   +5 more sources

Sulfur‐Rich μ‐O Diiron Catalyst for Electrochemical Hydrogen Production

open access: yesEuropean Journal of Inorganic Chemistry, Volume 29, Issue 8, 10 March 2026.
A diferric μ‐oxido complex supported by a sulfur‐rich scaffold acts as a proton‐reduction electrocatalyst for H2 production via a μ‐hydroxido species. An aminodithiophenolate scaffold with an NS2 donor set supports diiron complex formation. The diferrous precursor activates O2, giving rise to a diferric μ‐oxido species, which acts as a proton‐reduction
Hugo C. Hernández‐Toledo   +7 more
wiley   +1 more source

La naturaleza de la observación : evidencias arqueológicas en Somuncurá (Río Negro) [PDF]

open access: yes, 2014
Fil: Miotti, Laura Lucía. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Arqueología; ArgentinaFil: Blanco, Rocío Vanesa. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo.
Blanco, Rocío Vanesa   +5 more
core  

Two new records for the flora of Paraguay: Stemodia diplohyptoides and S. lobelioides (Plantaginaceae:Gratioleae)

open access: yesNordic Journal of Botany, Volume 2026, Issue 3, March 2026.
Stemodia diplohyptoides M.M.Sosa & Dematt. and S. lobelioides Lehm. (Gratioleae, Plantaginaceae) are reported for the first time in Paraguay, found in Alto Paraná and Presidente Hayes departments, respectively. These new records extend the known geographical range of both species, representing the northern records to date, S.
Y. Carlés Bechara   +4 more
wiley   +1 more source

Arqueología : Construyendo el pasado a través de los objetos [PDF]

open access: yes, 2010
Fil: Bonomo, Mariano. División Arqueología. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata; ArgentinaFil: Prates, Luciano José María. División Arqueología. Facultad de Ciencias Naturales y Museo. Universidad Nacional de La Plata;
Bagaloni, Vanesa Natalia   +7 more
core  

Dibujantes del Museo de La Plata: Edmundo Maristany [PDF]

open access: yes, 2013
Fil: Maristany, Marcelo E..
López, Hugo Luis   +2 more
openaire   +1 more source

Plants and Insect Eggs: First Report of a Katydid Using a Fern as Host for Oviposition

open access: yesNew Zealand Journal of Botany, Volume 64, Issue 1, March 2026.
Ferns are the second most diverse lineage of vascular plants worldwide and are particularly abundant in tropical forests. However, the ecological significance of such remarkable diversity has been often underestimated. In this article, we report for the first time the observation of ferns, specifically Polytaenium cajenense (Desv.) Benedict ...
Rafael P. Farias   +5 more
wiley   +1 more source

La colección de preparados palinológicos de la Cátedra de Palinología de la Facultad de Ciencias Naturales y Museo (FCNyM), Universidad Nacional de La Plata (UNLP), Buenos Aires, Argentina [PDF]

open access: yes, 2014
Fil: Yañez, Agustina. Universidad Nacional de la Plata. Facultad de Ciencias Naturales y Museo. Cátedra de Palinología; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo
Copello, Manuel   +13 more
core   +1 more source

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